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Energy Efficient Power Allocation for Delay-QoS Constrained Cognitive Radio Networks

Ding XU, Qun LI

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Summary :

The problem of power allocation in maximizing the energy efficiency of the secondary user (SU) in a delay quality-of-service (QoS) constrained CR network is investigated in this paper. The average interference power constraint is used to protect the transmission of the primary user (SU). The energy efficiency is expressed as the ratio of the effective capacity to the total power consumption. By using non-linear fractional programming and convex optimization theory, we develop an energy efficiency power allocation scheme based on the Dinkelbach method and the Lagrange multiplier method. Numerical results show that the proposed scheme outperforms the existing schemes, in terms of energy efficiency.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E99-A No.6 pp.1264-1267
Publication Date
2016/06/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E99.A.1264
Type of Manuscript
LETTER
Category
Communication Theory and Signals

Authors

Ding XU
  Nanjing University of Posts and Telecommunications
Qun LI
  Nanjing University of Posts and Telecommunications

Keyword